Water heater



. June 18, 19 29. 1 BLANDING 1,717,490

WATER HEATER Filed May 12, 1927 AT ORNE Patented June 18, 1929.

UNITED STATES v 1,717,490 PATENT OFFICE.

ROBERT L. BLANDING, 0F PROVIDENCE, RHODE ISLAND, ASSIGNOR TO TACO HEATERS INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

WATER HEATER.

Application filed May 12, 1927. Serial No. 190,677.

This invention relates to water heaters, and aims to provide a simple and convenient heater for utilizing boiler water to heat water for domestic uses.

While many types of water heaters or heat exchange devices have been proposed for utilizing water from the boiler of a house heating plant to heat water for domestic purposes, all such devices have, so far as I am aware,- possessed a degree of complication which has made them expensive to manufacture, diflicult to install, and inaccessible for cleaning purposes. In accordance with the present invention, I have eliminated these objections, by providing a heater having a one-piece hollow body containing all the necessary pipe connections, and, a

coil which projects through an open side of the body. The body has a detachable side cover which cooperates with it in enclosing the coil while the device is in use. The heater is inexpensive to manufacture and may readily be cleaned since the coil may be exposed by removing the side cover without breaking any of the pipe connections to the heater.

A heater embodying the invention is shown in the accompanying drawings, in which:

Fig. 1 is a vertical section of the heater taken on the line 1-1 of Fig. 2; and

Fig. 2 is a top view of the heater.

The hollow body 10 of the heater consists of a single casting. Its shape is approximately that of a hollow cylinder out by a plane parallel to its axis and at one slde of its axis. One side 11 of the body is open and surrounded by a projecting flange 12. The body contains four holes, one, 13 at its top, one 14 at its bottom, and two, 15 and 16 in its closed side 17. Each of these holes has at its outer end a pipe connectionfwhich may be provided by an integral internally threaded collar 18 as shown.

A heating coil or coiled pipe 20 is located in the body with its axis Vertical and with one of its sides projecting through the open side 11 of the body. The ends of the coil are permanently fixed in the inner portions of the holes 15, 16.

The heater is provided with a one-piece side cover 30 so'formed that, when its flange 31 is applied to the flange 12 of the body, it cooperates with the body in providing a substantially cylindrical casing for the coil.

Bolts 33, passing through holes in the flanges 31 of the side cover and the flange 12 of the body, serve to hold the cover on the body and to permit easy removal thereof. A packing 34 between the flanges 12 and 31 prevents leakage when the cover is applied. The heater is installed by connecting to the upper and lower holes 13 and 14, pipes leading from the upper and lower portions of the boiler of a heating furnace, and b connecting to the holes 15 and 16, pipes lea ing to a tank for storing hot water for domestic use. As the four pipe connections are provided in a single casting, the pipes leading to the heater are held rigidly in fixed relation to each other after the heater has been installed. Cleaning of theheater and particularly of the coil 20 may be accomplished by removing the side cover 30. This provides easy access to the coil without disconnecting any of the pipe connections. It should be noted that, as clearlyshown in Fig. 1, the external diameter of the coil 20 is materially less than the internal diameter of the casing,- and that the coil is positioned eccentrically in the casing bringing its front surface close to the cover 30, while providing a clearance space between the sides of the body and the coil and a still larger clearance space between the back wall of the body and the coil. Because of this arrangement, the entire surface of the coil may be reached and cleaned when the cover is removed.

What is claimed is:

1. A water heater, comprising a substantially cylindrical casing consisting of a onepiece body and a detachable one-piece cover having their opposed edges in a plane parallel to, and at one side of, the axis of the casing, said body being provided with an internally threaded hole in its upper end, an internally threaded hole in its lower end and two holes in its side, outwardly rojecting threaded collars surrounding t e side 100 1 holes and formed integral with the body, and a coil having its ends permanently fixed in said side holes, having an external diameter materially less than the internal diameter of the casing, and located eccen- 105 trically in the casing with its axis parallel to that of the. casing, but spaced outwardly therefrom so that while the outer side of the coil is located close to the cover, a clearance space is provided between the sides and A axis parallel to that of the casing but spaced outwardly therefrom so that while the outer side of the coil is located close to the cover, a clearance space is provided between the sides and the back of the coil and the inner surface of the body to permit access to the coil for cleaning it when the cover is removed.

In testimony whereof I have hereunto set 2 my hand.

ROBERT L. BLANDING. 

